Catharanthus roseus (synonymous with Vinca rosea) is a perennial plant commonly seen in tropical countries. Seven species of this genus are native to Madagascar and one species is native to Southern Asia. It is more commonly known as Madagascar periwinkle. The local name in Malaysia is Kemunting Cina. The National Cancer Council of Malaysia (Majlis Kanser Nasional, MAKNA) uses the periwinkle logo as its symbol of hope for cancer patients. (Copied from article).